Image via WikipediaBattery Wallpaper is very simple: puts a battery gauge right on the wallpaper.You can pick a couple different backgrounds, which does not change, and the "percentage" don't have much (okay, don't have ANY) options. Upon test, half of the number is covered by the dock. While it's usable, it really needs more options... which may or may not be in the paid version.
http://www.appbrain.com/app/battery-wallpaper-(free)/com.monkeyinmysoup.batterywallpaper
